Figure 29 - Assembled Fan; Figure 30 - Back Of The Fan; Figure 31 - Pin Groove Location; Figure 32 - Pitch Pin Location - AAON RN Series Installation Operation & Maintenance

Mark the location of any balancing weight.
Balancing weight will be on the outer bolt
circle, in the form of washers, and/or longer
bolts, or an additional balancing nut.
Number the blades and blade sockets, so that
they can be replaced into their original
positions.
Hub
Fan
Blade

Figure 29 - Assembled Fan

Step 3: Remove the mounting nuts and bolts
and separate hub plate castings

Figure 30 - Back of the Fan

Step 4: Remove the fan blades and replace
the pitch pins
50
Bushing
Mount
Step 5: Replace the fan blades with the pitch
pin of the blade in the same groove and
reassemble the fan.
Replace the blades and assemble the fan
making sure to place the blades in their
previous blade sockets, to match up the
previous orientation of hub plate casings and
to replace any balancing weights in their
Pin Groove

Figure 31 - Pin Groove Location

Pitch Pin

Figure 32 - Pitch Pin Location

Figure 33 - Example Pitch Pin